Medicine in Modern Britain Flashcards
At the start of the 20th Century, it was understood that ________ caused common illnesses
microbes/germs
At the start of the 20th Century, doctors diagnosed patients by…
observing their symptoms
Today, what is increasingly used for diagnosis?
Laboratory medicine through testing of samples and scans
How did scientific development help the understanding of causes of illness?
Had identified how lifestyle can affect health
Give 2 examples of how lifestyle can affect health
Any 2 from exercise, healthy eating, alcohol, tobacco, etc
Give 3 examples of technological improvements in medical equipment which have helped understanding of causes of illness today
Any 3 from x-ray machines, scanning machines, nuclear medicine, blood tests, etc
What are the benefits of using laboratorymedicine to diagnose illness?
It is much more accurate and quick than ever before
When was DNA discovered
1950s
The discovery of DNA led to…
an understanding of how people’s genes caused illnesses and diseases
The development of genetics had a major/minor impact on medicine
major
The development of genetics lead to the realisation that microbes…
do not cause all illnesses and diseases
The development of genetics lead to what discovery about the causes of illnesss and diseases?
Some babies are born with hereditary conditions passed on by their parents
In 1900, what did a German scientist called Mendel suggest?
That genes are inherited from parents
Why was Mendel’s suggestion about genes being inherited from parents dismissed in 1900?
He lacked the technology to prove it
When was DNA discovered?
1953
What does DNA stand for?
Deoxyribonucleic acid
Who made the model of DNA in 1953?
Watson and Crick
Watson and Crick used photographs and x-rays taken by who when researching DNA?
Wilkins and Franklin
What piece of technology had improved which helped Watson and Crick make their model of DNA?
microscopes
Watson and Crick said that DNA was shaped a…
double helix
What did Watson and Crick say DNA could do?
‘Unzip’ itself to make copies
Watson and Crick said that by studying a person’s DNA it could be used to identify what?
Parts that caused hereditary diseases
What does genome mean?
Complete set of DNA that contains all the genetic information to build a living thing
In a human genome there is more than _ billion DNA parts
3
With the Human Genome Project, scientists have mapped the human ______
genome
Why have scientists mapped the human genome with the Human Genome Project?
To find mistakes in the DNA of people who suffer hereditary diseases (such as haemophilia and certain types of breast cancer)
With the human genome project, scientists identified genes that cause…
Down’s syndrome, Parkinson’s disease and cystic fibrosis
Information found from the Human Genome Project is/is not able to treat diseases
Is not
Information found from the Human Genome Project helps find the _____ of diseases
Cause
If the cause of a disease is identified it may enable ways to…
prevent the disease from developing
If someone discovers they may have inherited a breast cancer gene from their mother, they may choose to…
have a mastectomy (their breasts removed)
What was the issue with using x-rays to capture images of DNA?
They were not clear enough
When were electron microscopes increasingly used?
The second half of the 20th century
What do electron microscopes use to illuminate the sample being examined?
A beam of electrons
Electron microscopes can magnify a sample up to how many times?
10,000,000
What is the difference in magnification between an ordinary microscope and an electron microscope?
An electron microscope can magnify up to 10,000,000 times whereas an ordinary microscope can only magnify up to 2,000 times